发明名称 |
VISIBLE LIGHT TRANSMITTER, VISIBLE LIGHT RECEIVER, VISIBLE LIGHT COMMUNICATION SYSTEM, AND VISIBLE LIGHT COMMUNICATION METHOD |
摘要 |
A visible light communication system having a transmission apparatus for modulating a transmission signal to a multiple-value number and a reception apparatus for demodulating a multiple-value modulated transmission signal is provided. The transmission apparatus includes a plurality of light emitters for emitting light in different colors, a chromaticity coordinates calculator for mapping a digital value to a chromaticity coordinates value, and a light intensity controller for controlling a light intensity of each of the light emitters based on the chromaticity coordinates value corresponding to the digital value. The reception apparatus includes a plurality of light receivers having different spectral characteristics, a chromaticity coordinates calculator for calculating a chromaticity coordinates value according to a received light intensity detected by each of the light receivers, and a demodulator for demodulating the digital value from the chromaticity coordinates value. |
申请公布号 |
EP2136484(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
EP20070860136 |
申请日期 |
2007.12.26 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
TOGASHI, MITSUHIRO |
分类号 |
H04B10/11;H04B10/116;H04B10/516;H04B10/61 |
主分类号 |
H04B10/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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